CVE-2025-68313
In the Linux kernel, the following vulnerability has been resolved: x86/CPU/AMD: Add RDSEED fix for Zen5 There's an issue with RDSEED's 16-bit and 32-bit register output variants on Zen5 which return a random value of 0 "at a rate inconsistent with randomness while incorrectly signaling success (CF=1)". Search the web for AMD-SB-7055 for more detail. Add a fix glue which checks microcode revisions. [ bp: Add microcode revisions checking, rewrite. ]
Affected versions
Linux kernel versions
6.8
and later are affected. Fixed in
6.12.58,
6.17.8,
6.18
and their respective stable series.
References
The following references provide additional information about CVE-2025-68313 including vendor advisories, patch commits, exploit details, and third-party analysis. Links are sourced from the NIST NVD database.
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PatchKernel patch commithttps://git.kernel.org/stable/c/36ff93e66d0efc46e39fab536a9feec968daa766
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PatchKernel patch commithttps://git.kernel.org/stable/c/607b9fb2ce248cc5b633c5949e0153838992c152
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PatchKernel patch commithttps://git.kernel.org/stable/c/e980de2ff109dacb6d9d3a77f01b27c467115ecb
Frequently asked questions
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What is CVE-2025-68313?
CVE-2025-68313 is a unscored severity Linux kernel vulnerability . It affects Linux kernel versions from 6.8 onward and has been patched in 6.12.58, 6.17.8 and 6.18. CVE-2025-68313 has not been confirmed as actively exploited and is not listed in the CISA KEV catalog.
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Is there a patch available for CVE-2025-68313?
Yes — CVE-2025-68313 has been patched. Fixed versions include 6.12.58, 6.17.8 and 6.18. If you are running Linux kernel 6.8 or later up to the fix versions, apply the relevant patch for your kernel branch.
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Is CVE-2025-68313 actively exploited?
No — CVE-2025-68313 has not been confirmed as actively exploited. It is not listed in the CISA Known Exploited Vulnerabilities (KEV) catalog.